A development this week represents a significant milestone for the rubber industry, with the advancement to pilot-scale production of bio-butadiene(bio-BDE) from fully renewable feedstock. A partnership of Versalis (Eni) , a European producer in the polymers and elastomers industry, and Genomatica, a leader in bioengineering solutions can use this bio-BDE to make bio-rubber, specifically, bio-polybutadiene (bio-BR). This has huge potential in both enabling an improved technological and sustainability footprint and in broadening the industry for butadiene, one of the most widely-used chemicals in the world, with over ten million tons produced per year.
The success of this innovative undertaking results from a newly-developed process for the on-purpose production of butadiene which uses various types of sugars as feedstock, rather than the traditional use of hydrocarbon feedstocks. The project started with the establishment of a technology joint venture between Versalis and Genomatica in early 2013. The joint venture with Versalis having the majority stake has developed a complete process to make bio-BDE and plans to license the resulting technology.
The joint venture uses the proven and complementary strengths of both companies. Versalis and Genomatica together determined that 1,3-butanediol (1,3-BDO) was the most suitable intermediate to produce bio-BDE. Genomatica (@)applied its whole-process systems approach to bioengineering to develop a microorganism that produces 1,3-BDO in a way that enables cost-efficient, scalable fermentation, recovery and subsequent process operations.
Versalis (@) leverages its industrial process engineering and catalysis capabilities, plus expertise in overall polymer production, to purify the 1,3-BDO, dehydrate it and then purify the resulting butadiene.Versalis has produced several kilograms of butadiene from 1,3-BDO made in 200 liter fermenters at their research centers at Novara and Mantova, and then made bio-polybutadiene, at the Ravenna R&D centre, using both anionic and Ziegler-Natta catalysis.
Initial testing of the bio-BDE and bio-BR demonstrates good compatibility with industry standards. Versalis is continuing to test the bio-BDE within its other proprietary rubber and plastics downstream technologies such as SBR (Styrene-Butadiene Rubber), SBS (Styrene-Butadiene-Styrene Rubber) and ABS (Acrylonitrile Butadiene-Styrene).
The accomplishments demonstrate the common vision of the partners on the potential of this project: access to on-purpose butadiene from renewables will establish a competitive advantage and will ensure a strategic raw material from alternative feedstock, contributing at the same time to drive a greater sustainability profile for downstream applications in the plastics and rubber businesses.
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